Comments for Sudden Aggressive Behavior from a Rottweiler/Blue Heeler Cross

Employ the "Nothing In Life Is Free" approach, so that your dog starts to view you as the "pack leader." If your dog doesn't see you as the leader, then your corrections will be meaningless. So, if you're doing subtle things (inadvertently) to undermine your leadership role around the house-- it will be counter-productive.

All the best,
Adam

Adam G. Katz is the author of, "Secrets of a Professional Dog Trainer!" -- which you can find at DogProblems.com.